Investigators traditionally use randomized designs and corresponding analysis procedures to make causal inferences about the effects of interventions, assuming independence between an individual’s ...

“The use of animals in research, teaching and testing is acceptable only if it promises to contribute to the understanding of environmental principles or issues; fundamental biological principles; or ...

Although preventive intervention research is still a relatively young field and formidable tasks lie ahead, the past decade has brought encouraging progress. At present, there are many intervention ...